Motorcycle floorboard



FIG. 1 is an isometric view showing my new design for a motorcycle floorboard;

FIG. 2 is a bottom view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is an isometric view showing the environment of the new design with an additional structure shown in phantom for illustrative purposes only and forming no part of the claimed design. 

The ornamental design for a motorcycle floorboard, as shown and described. 